Tether device



FIG. 1 is a perspective view of a tether device showing our new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is another perspective view of the tether device.

The broken line showing hands is included for the purpose of illustrating environment and forms no part of the claimed design. 

An ornamental design for a tether device, as shown and described. 